What is the current water temperature in Fukuoka?

As of now, in Fukuoka, the water temperature is 23.45°C. It's safe to say that the water is comfortably warm for various water-related activities.

Japan > Fukuoka

Water temperature in Fukuoka

Detailed information about the current water temperature in Fukuoka. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

74.2

°F

October 9, 18:15

Trend:

decreasing

Yesterday:

75.3°F

Tomorrow:

74.1°F

Sunrise:

06:18

Sunset:

17:53

Day Length:

11 h. 35 min.

Fukuoka in October

Minimum:

56.8°F

Average:

58.7°F

Maximum:

60.8°F

Sea water temperature in Fukuoka today

As of now, in Fukuoka, the water temperature is 74.2°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.0°F lower than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 78.2°F on 2025, while the historical minimum was 73.1°F on 2020.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 73.4°F, the minimum temperature may reach 72.6°F, and the maximum might stay at 74.1°F.

Daily water temperature in Fukuoka

Date	Current Year actual* / forecast**	last year	10 years average
Sep 25	77.3°F	80.6°F	77.3°F
Sep 26	77.3°F	80.2°F	77.2°F
Sep 27	76.7°F	79.9°F	77.1°F
Sep 28	77.5°F	80.4°F	77.2°F
Sep 29	77.5°F	80.1°F	77.2°F
Sep 30	76.9°F	79.7°F	76.9°F
Oct 1	76.4°F	79.3°F	76.5°F
Oct 2	77.0°F	78.8°F	76.4°F
Oct 3	76.9°F	78.4°F	76.4°F
Oct 4	76.7°F	78.0°F	76.2°F
Oct 5	76.8°F	77.6°F	75.9°F
Oct 6	76.4°F	78.4°F	75.8°F
Oct 7	75.8°F	77.9°F	75.4°F
Oct 8	75.3°F	77.6°F	75.2°F
Oct 9	74.2°F	78.2°F	75.2°F
Oct 10	74.1°F	77.6°F	75.1°F
Oct 11	73.9°F	77.5°F	74.9°F
Oct 12	73.6°F	78.5°F	74.6°F
Oct 13	73.3°F	77.8°F	74.3°F
Oct 14	73.3°F	79.3°F	74.3°F
Oct 15	72.8°F	78.3°F	73.8°F
Oct 16	72.6°F	78.1°F	73.6°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Fukuoka by month

In Fukuoka, the months July through October offer comfortable swimming conditions, which amounts to 112 swimming days.

The warmest water in Fukuoka was recorded on July 28, 2026, reaching a 88.4°F. While the coldest temperature occurred on March 10, 2025, dipping to 51.7°F. The average readings by season are 58.5°F in Winter, 60.3°F in Spring, 78.0°F in Summer, and 73.5°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kitakyushu	76.2°F	30mi
Shimonoseki	75.7°F	39mi
Kumamoto	75.9°F	57mi
Nagasaki	77.0°F	66mi

* current water temperature in this city

** straight line distance from Fukuoka